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Publication numberUS8210301 B2
Publication typeGrant
Application numberUS 12/793,975
Publication dateJul 3, 2012
Filing dateJun 4, 2010
Priority dateJun 9, 2009
Fee statusLapsed
Also published asDE102010022876A1, US20100307848
Publication number12793975, 793975, US 8210301 B2, US 8210301B2, US-B2-8210301, US8210301 B2, US8210301B2
InventorsTakashi Hashimoto, Toshiyuki Yamamoto
Original AssigneeFuji Jukogyo Kabushiki Kaisha
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Battery mounting structure for vehicle
US 8210301 B2
Abstract
In a battery mounting structure for a vehicle that includes a battery box mounted on an under-floor side of a vehicle body floor, the battery box includes: a battery pan on which a battery is placed; an outer peripheral frame formed to project from an outer peripheral edge portion of the battery pan; a cover placed on the battery pan from above; and sealing means provided in a joint portion between the battery pan and the cover, wherein the sealing means is disposed above the outer peripheral frame and positioned further inside than an outer periphery of the outer peripheral frame in plan view.
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Claims(8)
1. A battery mounting structure for a vehicle, which includes a battery box that is mounted on an under-floor side of a vehicle body floor, wherein said battery box has:
a battery pan on which a battery is placed and having an outer peripheral edge portion;
a wall disposed on the outer peripheral edge portion and positioned approximately perpendicular to said battery pan;
an outer peripheral frame formed to project from said outer peripheral edge portion of said battery pan and projecting approximately horizontally from a lower portion of said wall;
a cover placed on said battery pan from above;
a joint portion disposed between said battery pan and said cover, projecting approximately horizontally from an upper portion of said wall being disposed above said outer peripheral frame and positioned further inside than an outer periphery of said outer peripheral frame in plan view; and
a seal disposed solely on said joint portion and engaged by said cover.
2. The battery mounting structure for a vehicle according to claim 1, wherein a guard portion for concealing said seal from the outside of the vehicle in cooperation with said outer peripheral frame is formed on an outer peripheral edge portion of at least one of said cover and said battery pan.
3. The battery mounting structure for a vehicle according to claim 1, wherein said seal in a front end portion of said battery box is disposed on a rear side of a cross member that is provided on said vehicle body so as to extend in a vehicle width direction, and a part of said outer peripheral frame is disposed under a gap between said cross member and said seal.
4. The battery mounting structure for a vehicle according to claim 3, comprising a stay for connecting said front end portion of said battery box to said cross member.
5. The battery mounting structure for a vehicle according to claim 1, wherein said seal comprises:
a seal member formed from an elastic material; and
a cover side flange opposing said joint portion, with said seal interposed therebetween, and further comprises:
a clamp that sandwiches said battery pan side flange and said cover side flange using a spring force; and
a dropping-off prevention plate which is provided between an upper surface of said cover side flange and said clamp, and which engages respectively with said cover side flange and said clamp to prevent said clamp from dropping off.
6. The battery mounting structure for a vehicle according to claim 1, wherein said outer peripheral frame is provided around an entire periphery of the outer peripheral edge portion.
7. The battery mounting structure for a vehicle according to claim 1, wherein said cover further comprises a cover side flange opposing said joint portion, said cover side flange comprises:
a first end portion depending from said cover side flange further than said joint portion toward said lower portion of said wall.
8. The battery mounting structure for a vehicle according to claim 7, wherein said cover side flange further comprises:
a second end portion opposite said first end portion and contacts said joint portion.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS

The present application claims priority from Japanese Patent Application No. 2009-138064 filed on Jun. 9, 2009, and is hereby incorporated by reference in its entirety.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to battery mounting structures for vehicles, with which a battery can be mounted in a vehicle such as an electric vehicle or an electric hybrid vehicle.

2. Description of the Related Art

In a vehicle such as an electric vehicle or an engine/electric hybrid vehicle, a battery used as a travel power source is conventionally mounted in the vehicle, housed in a battery box serving as a protective container.

For example, Japanese Unexamined Patent Application Publication No. 2006-335243 describes a power supply device for a vehicle in which a battery box that includes a battery cover and houses a plurality of battery modules is connected to a side frame of a vehicle body via a support frame extending in a left-right direction.

Further, to ensure that a center of gravity of the vehicle is low and secure sufficient space in a cabin, the battery box is preferably mounted in an under-floor portion. In this case, however, measures must be taken to ensure that the battery is not drenched with water churned up by a vehicle wheel, water sprayed by a high-pressure car-washing machine during car washing, and so on.

For example, Japanese Unexamined Patent Application Publication No. 2009-35126 describes a battery box structure having vertically separated housing spaces, in which a battery that is vulnerable to drenching is housed in an upper housing space and accessories are housed in a lower housing space.

The structure described in Japanese Unexamined Patent Application Publication No. 2009-35126 is designed to be mounted on a frame side of a hybrid electric truck, and since the battery is disposed on the upper side, the center of gravity of the vehicle is high. Moreover, the height of the battery box is increased, and it is therefore difficult to secure cabin space. Hence, the structure cannot easily be disposed in an under-floor portion of a passenger car, for example.

SUMMARY OF THE INVENTION

An object of the present invention is to provide a battery mounting structure for a vehicle with which a battery is unlikely to be drenched even when the structure is disposed under a floor.

The present invention achieves the object described above using the following means.

A first aspect of the present invention is a battery mounting structure for a vehicle, which includes a battery box that is mounted on an under-floor side of a vehicle body floor, wherein the battery box includes: a battery pan on which a battery is placed; an outer peripheral frame formed to project from an outer peripheral edge portion of the battery pan; a cover placed on the battery pan from above; and sealing means provided in a joint portion between the battery pan and the cover, the sealing means being disposed above the outer peripheral frame and positioned further inside than an outer periphery of the outer peripheral frame in plan view.

A second aspect of the present invention is the battery mounting structure for a vehicle according to the first aspect, wherein a guard portion for concealing the sealing means from the outside of a vehicle in cooperation with the outer peripheral frame is formed on an outer peripheral edge portion of at least one of the cover and the battery pan.

A third aspect of the present invention is the battery mounting structure for a vehicle according to the first or second aspect, wherein the sealing means in a front end portion of the battery box is disposed on a rear side of a cross member that is provided on the vehicle body so as to extend in the vehicle width direction, and a part of the outer peripheral frame is disposed under a gap between the cross member and the sealing means.

A forth aspect of the present invention is the battery mounting structure for a vehicle according to the third aspect, including a stay for connecting the front end portion of the battery box to the cross member.

A fifth aspect of the present invention is the battery mounting structure for a vehicle according to any one of the first to fourth aspects, wherein the sealing means includes: a seal member formed from an elastic material; and a battery pan side flange and a cover side flange opposing each other across the seal member; a clamp that sandwiches the battery pan side flange and the cover side flange using a spring force; and a dropping-off prevention plate which is provided between an upper surface of the cover side flange and the clamp, and which engages with the cover side flange and the clamp to prevent the clamp from dropping off.

According to the present invention, the following effects can be obtained.

(1) Since the sealing means is disposed above the outer peripheral frame and positioned further inside than the outer periphery of the outer peripheral frame in plan view, the outer peripheral frame protects the sealing means such that even when a lower portion of the vehicle body is sprayed with water from a vehicle wheel or a high-pressure car-washing machine, the water is unlikely to reach the sealing means. As a result, drenching of the battery can be prevented even when the battery box is mounted under the floor.

(2) Since the guard portion for concealing the sealing means from the outside of the vehicle in cooperation with the outer peripheral frame is formed on the outer peripheral edge portion of at least one of the cover and the battery pan, the sealing means can be protected against water that passes through the outer peripheral frame. As a result, drenching of the battery can be prevented more reliably. A tongue-shaped end surface portion extending downward from a projecting end portion of the cover side flange, for example, may be used as the guard portion.

(3) Since the sealing means in the front end portion of the battery box is disposed on the rear side of the cross member provided on the vehicle body so as to extend in the vehicle width direction, and a part of the outer peripheral frame is disposed under the gap between the cross member and the sealing means, the sealing means in the front portion of the battery box, which is more likely to be soaked with water during travel, can be protected by the cross member and the outer peripheral frame, thereby preventing drenching of the battery. Further, by providing the cross member, load transfer in the vehicle width direction can be performed efficiently and rigidity can be secured in the vehicle body even when a large recessed portion for housing the battery is formed in the floor panel.

(4) By providing the stay for connecting the front end portion of the battery box to the cross member, support rigidity in the front end portion of the battery box can be improved, and the sealing means can be protected by the stay such that water is prevented from reaching the sealing means.

(5) By providing the sealing means having the seal member formed from an elastic material, the battery pan side flange and cover side flange opposing each other across the seal member, and the clamp that sandwiches the battery pan side flange and the cover side flange using a spring force, as well as the dropping-off prevention plate provided between the upper surface of the cover side flange and the clamp, which engages respectively with the cover side flange and the clamp to prevent the clamp from dropping off, a projection width of the flanges can be reduced in comparison with, for example, a technique in which an outer peripheral side of the seal member is fastened using a bolt or the like, and therefore, in a case, for example, where the battery box is housed in a limited space portion between the left and right side frames or the like, the width of the flanges can be narrowed, enabling an increase in the volume of the battery box main body. Further, by sandwiching the flanges using the clamp, a process for assembling the battery box can be simplified in comparison with a case in which the fastening is performed using a bolt or the like. Moreover, by providing the dropping-off prevention plate that engages with the upper surface of the cover side flange and the clamp, the clamp can be prevented from becoming dislodged while the vehicle is in use, and as a result, reliability can be secured.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an external perspective view from a diagonal lower side and a diagonal rear side of a vehicle body and a battery box included in an embodiment of a battery mounting structure for a vehicle to which the present invention is applied;

FIG. 2 is an exploded perspective view from a diagonal upper side and a diagonal front side of the battery box provided in the battery mounting structure for a vehicle according to the embodiment;

FIG. 3 is a plan view seen from above of the battery mounting structure for a vehicle according to this embodiment, the cover of which is not shown;

FIG. 4 is a sectional view of the battery mounting structure for a vehicle according to this embodiment, taken along an arrow IV-IV in FIG. 3;

FIG. 5 is a sectional view of the battery mounting structure for a vehicle according to this embodiment, taken along an arrow V-V in FIG. 3;

FIG. 6 is a sectional view from a horizontal direction of a fastening location between a battery pan and a cover of the battery box according to this embodiment;

FIG. 7 is a perspective view of the fastening location between the battery pan and the cover of the battery box according to this embodiment (a VII portion in FIG. 3) before attached with a clamp and a plate;

FIG. 8 is a perspective view of the fastening location between the battery pan and the cover of the battery box according to this embodiment when only the plate is attached thereto;

FIG. 9 is a perspective view of the fastening location between the battery pan and the cover of the battery box according to this embodiment when the clamp and the plate are attached thereto such that fastening is complete;

FIG. 10 is an enlarged sectional view of a waterproofing effect of the battery box according to this embodiment; and

FIG. 11A and FIG. 11B are views showing a difference in floor structure between the vehicle according to this embodiment and an engine vehicle that is a base vehicle of the vehicle according to this embodiment.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The present invention achieves the object of providing a battery mounting structure for a vehicle with which a battery is unlikely to be drenched even when the structure is disposed under a floor by having an outer peripheral frame project downward below a sealing portion formed between a battery pan and a cover constituting a battery box.

An embodiment of a battery mounting structure for a vehicle to which the present invention is applied will be described below. The battery mounting structure for a vehicle according to this embodiment is provided in a cabin under-floor portion of a vehicle such as a passenger car, for example.

A vehicle 1 on which the battery mounting structure for a vehicle is mounted is a two-box type small passenger vehicle (a minivan), for example, and includes a floor panel 2, side sills 3, side frames 4, a cross member 5, and so on, wherein a battery box 100 is mounted in a suspended state on an under-floor side of the floor panel 2 and in a gap between the left and right side frames 4.

The floor panel 2 is a surface portion constituting a cabin floor surface. The floor panel 2 is formed by pressing a steel plate, for example, and forms a part of a monocoque structure of the body of the vehicle 1.

The side sills 3 are provided on left and right end portions of the floor panel 2 as structural members having a closed cross section that extends substantially along a front-rear direction of the vehicle.

The side frames 4 are structural members having a closed cross section that extends along a lower surface of the floor panel 2 in the front-rear direction of the vehicle. The side frames 4 are disposed further inside in a vehicle width direction than the side sills 3, and are provided in a left-right symmetrical pair.

As shown in FIG. 3, respective rear end portions of the side frames 4 are disposed adjacent to a front-rear direction central portion of the battery box 100.

As shown in FIG. 11A, an area of the floor panel 2 between the left and right side frames 4 projects upward over substantially its entire width, thereby forming a battery housing portion 2 a in which an upper portion of the battery box 100 is housed.

As shown in FIG. 3, the cross member 5 is a transverse-beam shaped member provided across the left and right side frames 4 on the front side of the battery box 100.

As shown in FIG. 4, a transverse sectional shape of the cross member 5 includes a front surface portion 5 b and a rear surface portion 5 c extending respectively downward from front and rear end portions of a strip-shaped upper surface portion 5 a. The cross member 5 is formed integrally by pressing a steel plate, for example.

The battery box 100 is mounted on the under-floor side of the floor panel 2 of the vehicle 1 while housing a battery, not shown in the drawings.

As shown in FIG. 2, the battery box 100 is constituted by a plate-shaped battery pan 110 for carrying the battery and a cover 120 placed on an upper portion of the battery pan 110.

The battery pan 110 is constituted by a floor surface portion 111, a wall portion 112, a cross member 113, an outer peripheral frame 114, a flange 115, and so on. These members are respectively formed by, for example, pressing a steel plate and joined by welding or the like. Further, the floor surface portion 111, wall portion 112 and flange 115 are formed integrally.

The floor surface portion 111 is a flat plate-shaped part on which the battery is placed. When seen from the top of the vehicle, the floor surface portion 111 has a substantially rectangular planar shape with a long side direction that corresponds to the vehicle front-rear direction. A plurality of beads extending in the vehicle front-rear direction are formed on the floor surface portion 111 for reinforcement.

The wall portion 112 is a part that stands upright from an outer peripheral edge portion of the floor surface portion 111. The wall portion 112 constitutes a front surface portion, a rear surface portion and a side surface portion of a lower portion of the battery box 100.

As shown in FIGS. 2, 3 and so on, the cross member 113 is a transverse-beam shaped member provided in the interior of the battery pan 110 to connect the left and right side surface portions. The cross member 113 is joined to both the floor surface portion 111 and the wall portion 112 by welding or the like.

The outer peripheral frame 114 is a structural member provided around the entire periphery of the outer peripheral edge portion of the battery pan 110 and formed to project outward in a horizontal direction from a lower portion of the wall portion 112. The outer peripheral frame 114 secures rigidity in the battery box 100 and also serves to prevent water from entering a joint portion between the battery pan 110 and the cover 120. This will be described in detail below.

The flange 115 projects outward in the horizontal direction from an upper end portion of the wall portion 112 and serves as the joint portion for joining the battery pan 110 to the cover 120.

The cover 120 is placed on the upper portion of the battery pan 110, and is formed integrally from a resin-based material, for example.

The cover 120 is constituted by a front housing portion 121, a rear housing portion 122, a connecting portion 123, a flange 124, and so on.

The front housing portion 121 and rear housing portion 122 are box-shaped parts formed to project upward so that the battery can be housed in the interior thereof.

As shown in FIG. 6, a lower end portion 121 a of a side wall of the front housing portion 121 included in the cover 120 is disposed in a lower position than the flange 115 of the battery pan 110.

The connecting portion 123 connects the front housing portion 121 to the rear housing portion 122, and the battery box 100 is reduced in height at this portion so that the height of this portion does not cause interference with other components.

The flange 124 is formed to project outward in the horizontal direction from an outer peripheral edge portion in the vicinity of a lower end portion of the cover 120, and is disposed opposite the aforesaid flange 115 of the battery pan 110. Further, a seal member S formed from a rubber-based material or the like having elasticity, for example, is sandwiched between the flange 115 and the flange 124. The seal member S is crushed between the flanges 115 and 124 so that a gap between the flanges 115 and 124 is tightly closed, and as a result, water is prevented from entering the interior of the battery box 100 through this part. The entire periphery of the seal member S is disposed further inside than an outer periphery (projecting end portion) of the outer peripheral frame 114 in plan view when the battery box 100 is seen from above.

The flange 115 and the flange 124 are fastened using a clamp 150 and a plate 160, and as shown in FIG. 3, supplemental bolts B are used in locations where interference does not occur with vehicle body side members such as the side frames 4. A fastening operation using the clamp 150 and the plate 160 will be described in detail below.

As shown in FIG. 7 and so on, the flange 124 is formed with end surface portions 124 a and 124 b and projections 124 c.

The end surface portions 124 a and 124 b are tongue-shaped parts formed to project downward from an outer peripheral edge portion (projecting end portion) of the flange 124.

The end surface portion 124 a is provided in an area other than an attachment portion for the clamp 150. As shown in FIG. 10, a lower end portion of the end surface portion 124 a is disposed below the flange 115. With this constitution, the end surface portion 124 a conceals the gap between the flange 115 and the flange 124. The end surface portion 124 a functions as a guard portion according to the present invention for concealing the seal member S in cooperation with the outer peripheral frame 114.

The end surface portion 124 b is provided in the attachment portion for the clamp 150. As shown in FIG. 6, a lower end portion of the end surface portion 124 b contacts an upper surface portion of the flange 115.

The projections 124 c are engaged to the plate 160, and, as shown in FIG. 7 and so on, are formed to project from an upper surface portion of the flange 124 on either side of the attachment location for the clamp 150.

The battery box 100 is fixed to the vehicle 1 using a front stay 130 and a side stay 140.

As shown in FIG. 3, the front stay 130 connects the front end portion of the battery box 100 to the cross member 5.

As shown in FIG. 4, one end portion of the front stay 130 is joined to a lower surface portion of the outer peripheral frame 114 of the battery pan 110 by welding or the like, and the other end portion contacts a lower surface portion of the cross member 5. A welding nut 131 is fixed to the cross-member-5-side end portion of the front stay 130, whereupon the front stay 130 is fastened to the cross member 5 by a bolt B.

In the front end portion of the battery box 100, a lower end portion of the rear surface portion 5 c of the cross member 5 is disposed in a position lower than the flange 115 of the battery pan 110. Further, a tip end portion of the outer peripheral frame 114 is provided below the cross member 5 and disposed further toward the vehicle front than the rear surface portion 5 c of the cross member 5. In other words, the outer peripheral frame 114 is disposed under a gap between the cross member 5 and the flange 115.

As shown in FIG. 3, the side stay 140 connects a side end portion of the battery box 100 to the side frame 4.

As shown in FIG. 5, one end portion of the side stay 140 is joined to the lower surface portion of the outer peripheral frame 114 of the battery pan 110 by welding or the like, and the other end portion contacts a lower surface portion of the side frame 4 fixedly.

In the side portion of the battery box 100, the lower surface portion of the side frame 4 is disposed at a substantially identical height to the flange 115 of the battery pan 110. Further, the projecting end portion of the outer peripheral frame 114 is disposed below the side frame 4.

Next, the manner in which the battery pan 110 is fastened to the cover 120 using the clamp 150 and the plate 160 will be described.

As shown in FIG. 6, the clamp 150 includes an upper surface portion 151 for pressing the upper surface portion of the flange 124 on the cover 120, a lower surface portion 152 for pressing the lower surface portion of the flange 115 on the battery pan 110, and a connecting portion 153 for connecting the upper surface portion 151 to the lower surface portion 152, these portions being formed integrally from a plate material possessing elasticity such as spring steel, for example.

To facilitate attachment of the clamp 150, insertion-direction-front-side projecting end portions of the upper surface portion 151 and the lower surface portion 152 are formed with inclined portions inclined upward and downward, respectively.

Further, as shown in FIG. 9, the upper surface portion 151 and lower surface portion 152 have a greater width in the horizontal direction (flange lengthwise direction) than the connecting portion 153.

The plate 160 is formed from a thin steel plate, for example. As shown in FIGS. 6, 8 and so on, the plate 160 is constituted by an upper surface portion 161, an end surface portion 162, ear portions 163, pawl portions 164, and so on.

The upper surface portion 161 is a flat plate-shaped part that is sandwiched between the upper surface portion 151 of the clamp 150 and the flange 124.

The end surface portion 162 is formed to project downward from an outer end portion of the upper surface portion 161 and contacts the end surface portion 124 b of the flange 124. The ear portions 163 are provided to project from either end portion of the upper surface portion 161, and as shown in FIGS. 6, 8 and so on, the ear portions 163 engage with the projections 124 c on the flange 124 in order to position the plate 160.

The pawl portions 164 are cut and raised from the upper surface portion 161, and are formed in an inclined shape such that an end thereof on the side of the front housing portion 121 is higher than an end on the side of the flange 124.

As shown in FIG. 9, the pawl portions 164 engage with respective end portions of the upper surface portion 151 of the clamp 150 to prevent the clamp 150 from dropping off.

In a process for assembling the battery box 100, first, as shown in FIG. 7, the cover 120 is placed on the battery pan 110, and then, as shown in FIG. 8, the plate 160 is placed on the upper portion of the flange 124. At this time, the plate 160 is disposed such that the ear portions 163 engage with the projections 124 c of the flange 124.

Next, the clamp 150 is pressed on to fasten the flanges 115 and 124. The clamp 150 flattens the pawl portions 164 while passing over the plate 160, whereupon the pawl portions 164 rise again so as to be pushed into positions for engaging with the upper surface portion 151 of the clamp 150. In this position, the clamp 150 is prevented from dropping off the flanges by the plate 160, and therefore fastening is complete.

As shown in FIG. 3, this structure for fastening the battery pan 110 to the cover 120 using the clamp 150 is dispersed around substantially the entire periphery of the battery box 100. Further, in locations where interference does not occur with vehicle body side members such as the side frames 4, supplemental a fastening structure using the bolt B is employed.

According to the embodiment described above, the following effects can be obtained.

As shown in FIG. 10, in this embodiment, the outer peripheral frame 114 of the battery pan 110 extends around a lower side of the joint portion between the flanges 115 and 124 sandwiching the seal member S, and the end surface portion 124 a of the flange 124 projects downward from an outer side of the flange 115. With this constitution, it is impossible for water from the vehicle lower portion to reach the gap between the flanges 115 and 124 on a rectilinear course. More specifically, as shown in FIG. 10, a straight line L linking an upper side edge portion of the outer peripheral frame 114 and a lower side edge portion of the end surface portion 124 a of the flange 124 passes through the lower surface portion of the flange 115, and therefore the gap between the flanges 115 and 124 is concealed by the outer peripheral frame 114 and the end surface portion 124 a so as to be invisible from the vehicle lower portion.

The side frames 4, cross member 5, front stay 130, rear stay 140, and clamp 150 described above also protect the gap between the flanges 115 and 124 to prevent water from reaching the gap.

Hence, the battery is prevented from being drenched by water that enters the interior of the battery box 100 from a vehicle wheel or a high-pressure car-washing machine, for example.

Further, in an electric automobile in which the battery box 100 is housed under the floor, the battery housing portion 2 a must be formed over substantially the entire width of the area between the left and right side frames 4, as shown in FIG. 11A, and therefore, in contrast to a case where a floor tunnel 2 b is formed only in the central portion of the floor panel 2, as in an engine vehicle shown in FIG. 11B, it is difficult for the floor panel 2 to transfer a load in the vehicle width direction.

In this embodiment, however, the cross member 113 is provided in the interior of the battery pan 110 and the left and right side frames 4 are connected by the cross member 113 via the outer peripheral frame 114 and the stay 140, and therefore load transfer in the vehicle width direction can be performed efficiently such that rigidity is secured in the vehicle body.

The cross member 5 provided directly in front of the battery box 100 also contributes to load transfer in the vehicle width direction between the left and right side frames 4, thereby improving the rigidity of the vehicle body.

Furthermore, by fastening the battery pan 110 and cover 120 of the battery box 100 using the clamp 150, a projection width of the flanges 115 and 124 can be reduced in comparison with a case where an outer peripheral side of the seal member S is fastened using a bolt or the like, and therefore, when the battery box 100 is housed between the side frames 4, an interior volume of the battery box 100 can be increased due to the reduced width of the flanges.

Further, the clamp 150 can be attached by a simple one-touch pushing operation, and therefore a process for manufacturing the battery box 100 can be simplified. Moreover, by providing the plate 160 for preventing the clamp 150 from dropping off, the clamp 150 can be prevented from becoming dislodged while the vehicle is in use. If the clamp 150 were engaged directly with the projections 124 c on the flange 124, it would be necessary to widen the highly rigid clamp 150 in order to pass the clamp 150 over the projections 124 c, and as a result, workability would deteriorate due to the need to prepare a dedicated tool, for example. In this embodiment, on the other hand, the plate 160 that engages respectively with the flange 124 and the clamp 150 is used, and therefore the clamp 150 can be attached using a small amount of force, i.e. without impairing workability. In addition, the clamp 150 can be prevented from dropping off.

The present invention is not limited to the embodiment described above, and may be subjected to various amendments and modifications within the technical scope of the present invention.

For example, the specific constitutions of the vehicle body, battery box, and fastening structure may be modified appropriately. For example, the vehicle according to the above embodiment is a small electric vehicle, but the present invention may also be applied to a medium or large vehicle, an engine-electric hybrid vehicle, a fuel cell vehicle, and so on.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2933548 *May 16, 1956Apr 19, 1960Chloride Electrical Storage CoElectric storage battery carriers
US3741815 *Jan 25, 1972Jun 26, 1973Peterson Prod San Mateo IncRailroad signal battery box
US4444373 *Mar 29, 1982Apr 24, 1984Nissan Motor Company, LimitedFuel tank mounting assembly for motor vehicle
US4453724 *May 27, 1982Jun 12, 1984Toyota Jidosha Kogyo Kabushiki KaishaFuel tank construction of motor vehicle
US4621822 *Jun 26, 1985Nov 11, 1986Daimler-Benz AktiengesellschaftArrangement of a fuel tank in the rear region of a motor vehicle
US4765635 *Jul 17, 1987Aug 23, 1988Nissan Motor Co., Ltd.Fuel tank mounting device
US4789224 *May 4, 1987Dec 6, 1988General Motors CorporationInstrument panel having light pipe having legs
US5097789 *Sep 10, 1990Mar 24, 1992Yamaha Hatsudoki Kabushiki KaishaBattery arrangement for small watercraft
US5280273 *Dec 21, 1992Jan 18, 1994Goldstein Mark KToxic gas detector system having convenient battery and sensor replacement
US5326651 *Nov 3, 1992Jul 5, 1994Motorola, Inc.Weldless battery pack with wiping contacts
US5392873 *Jan 21, 1993Feb 28, 1995Honda Giken Kogyo Kabushiki KaishaStructure for securing batteries used in an electric vehicle
US5405167 *Jan 21, 1994Apr 11, 1995Hyundai Motor CompanyCombined subframe and fuel tank for use in automobiles
US5501289 *Jan 24, 1994Mar 26, 1996Nissan Motor Co., Ltd.Floor structure of electric vehicle
US5534364 *Apr 29, 1994Jul 9, 1996Honda Giken Kogyo Kabushiki KaishaBattery box device for electric vehicle
US5555950 *Jan 20, 1995Sep 17, 1996Toyota Jidosha Kabushiki KaishaBody structure for electric vehicle
US5579697 *Aug 29, 1995Dec 3, 1996Zeftek, Inc.Auto rack panel gap sealing device
US5584526 *Mar 21, 1994Dec 17, 1996Richard Fritz Gmbh & Co. KgFixedly installable window pane for motor vehicles
US5585205 *Apr 26, 1994Dec 17, 1996Institute For Home Economics Of Japan, Inc.System apparatus for battery swapping
US5620057 *Dec 19, 1994Apr 15, 1997General Motors CorporationElectric vehicle battery enclosure
US5863674 *May 13, 1997Jan 26, 1999Nec CorporationBattery terminals for a miniature electronic apparatus and structure for holding the same
US5948298 *Apr 26, 1996Sep 7, 1999Ford Global Technologies, Inc.Battery heating system
US5997040 *Apr 23, 1997Dec 7, 1999Honda Giken Kogyo Kabushiki KaishaFuel cylinder mounting structure in motorcar
US6040080 *Nov 28, 1997Mar 21, 2000Suzuki Motor CorporationBattery tray
US6188574 *Jul 20, 1999Feb 13, 2001Honda Giken Kogyo Kabushiki KaishaCooling structure for electric vehicle
US6218041 *Nov 3, 1998Apr 17, 2001U.S. Philips CorporationBattery unit and a portable battery-operated device including such a battery unit
US6224998 *Feb 4, 1999May 1, 2001Delphi Technologies, Inc.Battery, tray and heat shield assembly
US6227322 *Dec 2, 1998May 8, 2001Nissan Motor Co., Ltd.Electric vehicle structure
US6435365 *Oct 15, 1999Aug 20, 2002Delphi Technologies, Inc.Seal assembly for a fuel tank
US6511770 *Dec 14, 2000Jan 28, 2003Kang-Chao ChangBattery casing with an ejector
US6617973 *Mar 12, 2002Sep 9, 2003Thomas A. OstermanUnderground battery vault system for communications applications
US6723466 *Mar 13, 2001Apr 20, 2004Nissan Motor Co., Ltd.Storage battery with laminated battery element
US6886861 *Feb 19, 2003May 3, 2005General Motors CorporationTrunk mounted fuel tank assembly
US7040432 *Nov 6, 2003May 9, 2006Honda Motor Co., Ltd.Wire and pipe-laying structure for fuel cell vehicle
US7040691 *Dec 6, 2004May 9, 2006Material Sciences CorporationVehicle floor tub having a laminated structure
US7051825 *May 20, 2004May 30, 2006Honda Motor Co., Ltd.Structure for installing high-voltage equipment component to vehicle
US7350610 *Oct 28, 2004Apr 1, 2008Hino Motors, Ltd.Retaining structure for battery cover
US7401669 *Jul 22, 2005Jul 22, 2008Sanyo Electric Co., Ltd.Battery device of vehicle power supply
US7544439 *Apr 27, 2005Jun 9, 2009The Gillette CompanyVenting water-tight battery-operated devices
US7610783 *Nov 17, 2004Nov 3, 2009Telezygology Inc.Fasteners and other assemblies
US7610978 *Dec 11, 2008Nov 3, 2009Mitsubishi Jidosha Kogyo Kabushiki KaishaBattery unit mounting structure for electric vehicle
US7614473 *Jun 27, 2006Nov 10, 2009Honda Motor Co., Ltd.Vehicle body structure
US7631712 *Apr 28, 2005Dec 15, 2009Toyota Jidosha Kabushiki KaishaMounting structure of electrical equipment
US7654351 *May 25, 2006Feb 2, 2010Honda Motor Co., Ltd.Power source device and battery cooling structure for vehicle
US7654352 *Dec 4, 2008Feb 2, 2010Mitsubishi Jidosha Kogyo Kabushiki KaishaElectric vehicle
US7688582 *Sep 7, 2007Mar 30, 2010Honda Motor Co., Ltd.Electrical device cooling structure in vehicle
US7690686 *Jun 18, 2008Apr 6, 2010Nissan Motor Co., Ltd.Rear vehicle structure
US7726427 *Jul 26, 2006Jun 1, 2010A. Raymond Et CieBattery fixing device
US7913788 *Feb 9, 2010Mar 29, 2011Gm Global Technology Operations, LlcIntegrated energy storage and rear suspension assembly
US7926602 *Dec 27, 2007Apr 19, 2011Mitsubishi Jidosha Kogyo Kabushiki KaishaStructure for mounting batteries onto electric vehicles
US7931105 *Jan 24, 2008Apr 26, 2011Mitsubishi Jidosha Kogyo Kabushiki KaishaStructure for mounting batteries onto electric vehicles
US7993155 *Sep 18, 2009Aug 9, 2011Better Place GmbHSystem for electrically connecting batteries to electric vehicles
US7997368 *Mar 24, 2009Aug 16, 2011Mitsubishi Jidosha Kogyo Kabushiki KaishaBattery case for electric vehicle
US8006793 *Apr 23, 2009Aug 30, 2011Better Place GmbHElectric vehicle battery system
US8079435 *Mar 24, 2009Dec 20, 2011Mitsubishi Jidosha Kogyo Kabushiki KaishaElectric vehicle
US20040035617 *Aug 21, 2003Feb 26, 2004Chaney George T.Electric vehicle chassis with removable battery module and a method for battery module replacement
US20040056472 *Sep 10, 2003Mar 25, 2004L&L Products, Inc.Fuel fill assembly and method of forming same
US20060119137 *Dec 7, 2004Jun 8, 2006Nissan Technical Center North America, Inc.Vehicle support structure with floor impact movement restriction device
US20070024947 *Jun 29, 2006Feb 1, 2007Gentex CorporationVehicular rearview mirror elements and assemblies incorporating these elements
US20070040418 *Jun 29, 2006Feb 22, 2007Honda Motor Co., Ltd.Electrical device cooling structure in vehicle
US20070284167 *Feb 14, 2006Dec 13, 2007Toyota Jidosha Kabushiki KaishaBattery Pack and Motor Vehicle
US20080151350 *Jan 15, 2008Jun 26, 2008Gentex CorporationElectrochromic device
US20080160394 *Dec 27, 2007Jul 3, 2008Mitsubishi Jidosha Kogyo Kabushiki KaishaStructure for mounting batteries onto electric vehicles
US20080160396 *Dec 27, 2007Jul 3, 2008Mitsubishi Jidosha Kogyo Kabushiki KaishaStructure for mounting batteries onto electric vehicles
US20080182163 *Dec 28, 2007Jul 31, 2008Shenzhen Mindray Bio-Medical Electronics Co., Ltd.Battery loading and unloading structure
US20080190679 *Jan 24, 2008Aug 14, 2008Mitsubishi Jidosha Kogyo Kabushiki KaishaStructure for mounting batteries onto electric vehicles
US20080196957 *May 25, 2006Aug 21, 2008Honda Motor Co., Ltd.Power source device and battery cooling structure for vehicle
US20090026802 *Mar 21, 2008Jan 29, 2009Honda Motor Co., Ltd.Rear frame structure for vehicle
US20090044997 *Jul 26, 2006Feb 19, 2009A. Raymond Et CieBattery fixing device
US20090090575 *Sep 26, 2008Apr 9, 2009Nissan Motor Co., Ltd.High-voltage battery unit mounting structure for vehicle
US20090120703 *Sep 4, 2006May 14, 2009Shuuichi NagataStructure for mounting power supply device in vehicle
US20090152034 *Dec 11, 2008Jun 18, 2009Seiichi TakasakiBattery unit mounting structure for electric vehicle
US20090166116 *Feb 23, 2007Jul 2, 2009Toyota Jidosha Kabushiki KaishaStructure mounting an electricity storage pack on a vehicle
US20090186266 *Mar 26, 2009Jul 23, 2009Haruchika NishinoBattery unit
US20090226806 *Feb 26, 2007Sep 10, 2009Toyota Jidosha Kabushiki KaishaStructure for Mounting Electricity Storage Pack on Vehicle
US20090236161 *Mar 2, 2009Sep 24, 2009Dr. Ing. H.C.F. Porsche AktiengesellschaftProtective housing for a galvanic cell in a motor vehicle
US20090236162 *Mar 24, 2009Sep 24, 2009Mitsubishi Jidosha Kogyo Kabushiki KaishaBattery case for electric vehicle
US20090242299 *Mar 24, 2009Oct 1, 2009Mitsubishi Jidosha Kogyo Kabushiki KaishaElectric vehicle
US20090298311 *Mar 24, 2009Dec 3, 2009Sumitomo Wiring Systems, Ltd.Electrical junction box
US20100000816 *Jul 7, 2009Jan 7, 2010Wataru OkadaCar battery array having a plurality of connected batteries
US20100025126 *May 29, 2009Feb 4, 2010Hitachi, Ltd.Power Conversion Apparatus and Electric Vehicle
US20100059208 *Sep 10, 2009Mar 11, 2010Honda Motor Co., Ltd.Battery cooling structure
US20100071979 *Apr 23, 2009Mar 25, 2010Yoav HeichalElectric Vehicle Battery System
US20100273040 *Nov 18, 2008Oct 28, 2010Honda Motor Co., Ltd.Vehicular power supply system
US20100321758 *Jul 8, 2010Dec 23, 2010Gentex CorporationVehicular Rearview Mirror Elements and Assemblies Incorporating These Elements
US20110000729 *Jul 2, 2010Jan 6, 2011Gm Global Technology Operations, Inc.Floor structure for a motor vehicle
US20110011654 *Jan 23, 2009Jan 20, 2011Honda Motor Co., LtdHybrid vehicle
US20110024207 *Apr 8, 2009Feb 3, 2011Nissan Motor Co., Ltd.Battery pack and method of producing the battery pack
US20110139527 *Aug 4, 2009Jun 16, 2011Renault S.A.S.Motor vehicle battery supporting structure
US20110262780 *May 23, 2011Oct 27, 2011George Barry CohenWhole House Backyard Battery
US20110262801 *Apr 23, 2010Oct 27, 2011Gm Global Technology Operations, Inc.Mounting arrangement for a battery pack
US20110297469 *May 26, 2011Dec 8, 2011Mazda Motor CorporationBattery mounting structure of electromotive vehicle
JP2006335243A Title not available
JP2009035126A Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US8464817 *May 26, 2011Jun 18, 2013Mazda Motor CorporationBattery mounting structure of electromotive vehicle
US8739910 *Oct 23, 2012Jun 3, 2014Honda Motor Co., Ltd.Power supply system for electric vehicle
US8789634 *Dec 16, 2011Jul 29, 2014Suzuki Motor CorporationElectric vehicle
US8820820Dec 15, 2011Sep 2, 2014GM Global Technology Operations LLCRear motor vehicle floor module
US8833499 *Dec 5, 2011Sep 16, 2014Tesla Motors, Inc.Integration system for a vehicle battery pack
US8875828 *Feb 20, 2013Nov 4, 2014Tesla Motors, Inc.Vehicle battery pack thermal barrier
US8936125Jan 30, 2013Jan 20, 2015Mitsubishi Jidosha Kogyo Kabushiki KaishaBattery container
US8967312 *Jul 12, 2013Mar 3, 2015Mitsubishi Jidosha Kogyo Kabushiki KaishaBattery pack tray
US9051952 *Jul 10, 2013Jun 9, 2015GM Global Technology Operations LLCSupport structure component of a motor vehicle body with a plastic insert
US9073498 *Jun 13, 2013Jul 7, 2015Hyundai Motor CompanyBattery tray for vehicle
US9120508 *Nov 7, 2012Sep 1, 2015GM Global Technology Operations LLCCross member of a motor vehicle body
US9169945 *Sep 24, 2012Oct 27, 2015Bayerische Motoren Werke AktiengesellschaftDevice for discharging condensate for a housing of a motor vehicle closed off from the environment, housing, and motor vehicle
US9254874Dec 15, 2011Feb 9, 2016GM Global Technology Operations LLCRear floor module of a motor vehicle
US9505442Mar 5, 2015Nov 29, 2016Ford Global Technologies, LlcEnergy absorbing rocker assembly
US9533631 *Dec 2, 2014Jan 3, 2017Toyota Jidosha Kabushiki KaishaBattery mounting structure for vehicle
US20110240386 *Apr 5, 2011Oct 6, 2011Coda Automotive, Inc.Electric vehicle with structurally integrated components
US20110297469 *May 26, 2011Dec 8, 2011Mazda Motor CorporationBattery mounting structure of electromotive vehicle
US20120103714 *Mar 3, 2011May 3, 2012Kia Motors CorporationBattery pack housing assembly for electric vehicle using plastic composite material
US20120153674 *Dec 15, 2011Jun 21, 2012GM Global Technology Operations LLCRear motor vehicle floor module
US20120160583 *Dec 5, 2011Jun 28, 2012Tesla Motors, Inc.Integration System for a Vehicle Battery Pack
US20120160584 *Dec 16, 2011Jun 28, 2012Nitawaki KunihiroElectric vehicle
US20130020139 *Nov 28, 2011Jan 24, 2013Kia Motors CorporationMounting structure for battery in electric vehicle
US20130118823 *Nov 7, 2012May 16, 2013GM Global Technology Operations LLCCross member of a motor vehicle body
US20130119706 *Oct 23, 2012May 16, 2013Honda Motor Co., Ltd.Power supply system for electric vehicle
US20130126008 *Sep 24, 2012May 23, 2013Bayerische Motoren WerkeDevice for Discharging Condensate for a Housing of a Motor Vehicle Closed Off From the Environment, Housing, and Motor Vehicle
US20130153317 *Feb 20, 2013Jun 20, 2013Tesla Motors, Inc.Vehicle Battery Pack Thermal Barrier
US20140014428 *Jul 12, 2013Jan 16, 2014Mitsubishi Jidosha Kogyo Kabushiki KaishaBattery pack tray
US20140158443 *Jun 13, 2013Jun 12, 2014Hyundai Motor CompanyBattery tray for vehicle
US20140165354 *Jun 6, 2012Jun 19, 2014Kabushiki Kaisha Toyota JidoshokkiVehicle battery unit installation apparatus
US20150180078 *Dec 16, 2014Jun 25, 2015Toyota Jidosha Kabushiki KaishaResin panel structure
US20160114667 *May 21, 2014Apr 28, 2016Toyota Jidosha Kabushiki KaishaVehicle battery mounting structure
DE102015205413A1Mar 25, 2015Sep 29, 2016Deutsches Zentrum für Luft- und Raumfahrt e.V.Tragende Struktur und Fahrzeug
Classifications
U.S. Classification180/68.5
International ClassificationB60R16/04
Cooperative ClassificationY02T10/7005, Y02T10/705, B60K2001/0438, B60K1/04, B60L11/1877, B60L11/1879
European ClassificationB60K1/04
Legal Events
DateCodeEventDescription
Jun 4, 2010ASAssignment
Owner name: FUJI JUKOGYO KABUSHIKI KAISHA, JAPAN
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HASHIMOTO, TAKASHI;YAMAMOTO, TOSHIYUKI;REEL/FRAME:024486/0839
Effective date: 20100604
Oct 15, 2014ASAssignment
Owner name: FUJI JUKOGYO KABUSHIKI KAISHA, JAPAN
Free format text: CHANGE OF ADDRESS;ASSIGNOR:FUJI JUKOGYO KABUSHIKI KAISHA;REEL/FRAME:033989/0220
Effective date: 20140818
Feb 12, 2016REMIMaintenance fee reminder mailed
Jul 3, 2016LAPSLapse for failure to pay maintenance fees
Aug 23, 2016FPExpired due to failure to pay maintenance fee
Effective date: 20160703